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Finding the Fourth Proportional to 98,172.55, 147,311.67 and 39,008.75

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Solution

The fourth proportional to 98,172.55, 147,311.67 and 39,008.75 is: 58,534.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,172.55 : 147,311.67 = 39,008.75 : x
  2. Step 2: Convert to fraction form
    98,172.55/147,311.67 = 39,008.75/x
  3. Step 3: Cross multiply
    98,172.55x = 147,311.67 × 39,008.75
  4. Step 4: Simplify right side
    98,172.55x = 5,746,444,107.11
  5. Step 5: Solve for x
    x = 5,746,444,107.11/98,172.55
  6. Step 6: Final answer
    x = 58,534.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.